BeckyWhy,
A little plan can go a long way to making things go smooth at Disney.
Some people plan at least a basic itinerary because they want to try a specific restaurant. Depending on when you go and what restaurant you may need to make a PS ahead of time. Disney has many great restaurants, especially at Epcot. I know you said you were rarely hungry last time, but you may want to try one of the nicer restaurants at Disney. If you know you have a PS for that evening you can adjust your plans, such as a very light lunch and no afternoon snacks, etc.
Also, while you felt the lines weren't long, I don't like to stand in line for 45-60 mins. Personally, I find that a long wait. This year my DW and I went over Xmas week. With a little planning, using the Unofficial Guide to determine which rides to go on first, using Fast Pass, and getting up early we rarely waited longer than 20 minutes. And this was during the busiest time of the year.
I don't mean this as a criticism of your way of doing Disney. Your method probably is more relaxing, especially since you seem to have the right attitude and realize that everyone has to wait in line, etc. This was only meant as an example of how planning a brief itinerary can help.
My plan probably doesn't work as well for you. I can certainly understand wanting to sleep in. But a little planning can still help cut down your time standing in line, and also let you experience different things (such as a good restaurant, seeing Cirque, etc).
Good luck to you on your trip.